Display device for demonstrating lubricating oils



Feb. 5, 1935. 5, CAVANAUGH 1,990,063

DISPLAY DEVICE FOR DEMONSTRATING LUBRICATING OILS Filed May 3, 1933 "HHllu. "Illllllu...

65 /265 5. CAvA/vAueH fWW ATTORNEY INVENTOFZ Patented Feb. 5, 1935 UNITED STATES DISPLAY DEVICE FOR DEMONSTRATING LUBRICATING OILS Georges. Cavanaugh, Los Angeles, Calif, assignor to The Pennzoil Company,

. California a corporation of Application May 3, 1933, Serial N0.'669,163

6 Claims.

My invention relates to the art of display devices such as are used for making visible demonstration of the qualities of a product which are not readably discernible to ordinary observation, being more particularly an'apparatus for visibly showing the effect of different grades of lubricating oil on the lubricated parts of machinery."-

It is a recognized fact to those skilled m the art of lubrication, with particular reference to automotive equipment, that different types or grades of lubricating oil, commonly graded-according to their viscosity and their Baumgravity, are desirable, dependent not-only on "the character of mechanism to which theoil is ap plied but also to the degree of wear tb which the parts have been subjected. f

With particular reference to' oils, such as are used for lubricating internal combustionengines, it has become desirable to educate not only the dispensers or retailers of lubricating oils, but also the purchasing public driving automobiles, to the desirability of using the correctoilin the motor. As a material aid in accomplishing this purpose, Ihave provideda device of the class described.

lit isthe principal object of my invention to produce a device of simple form and construction whereby the effect of different gradesof lubricating oil on a bearing may 'be visibly noted, such device being economical, as but a few drops of oil are necessary to be used for demonstration.

Referring to the drawing which is for illus trative purposes only,

' Fig. 1 is a face view of a device embodying a form of my invention;

Fig. 2 is a sectional plan View on Fig. 1;

Fig. 3 is a sectional view on line 3-3 in Fig. 2;

Fig. 4 is a plan View of the fixed bearing member; and 3 a Fig. 5 is a fragmentary face view showing a modified form of my invention.

Referring more particularly to devices shown in the drawing, 11 designates a base or supporting member provided'with a vertically extending panel or standard 12.

Secured to and fixed upon the base member 11 by suitable screws, such as shown at 13, is a fixed bearing member 14 having a flat bearing face 15 terminating in an annular channel 16. The channel 16 communicates by means of ducts 17 with grooves 18 and wells 19 formed in the face of the base member 11 to catch and retain oil from the bearing. The bearing face 15 is preferably provided with a spiral groove 15 to relieve excess oil from the bearing face.

line 22 in in the rotatable bearingvmember 21 leading from The fixed bearing member 14. is provided with an upwardly extending annular wall or flange 20 which receives freely therewithin a rotatable bearing member 21 vertically slidable on the squared portion 22 of a shaft 23, the upper portion i5 of the'member forming a cup 21 adapted to receive a lubricant to be tested. The lower end of the shaft 23 is rounded and seats in a recess 24 in the fixed bearing member 14.

In the bottom of the cup 21 is provided an annular oil groove 27 which feeds oil from the cup through ducts 28 to the bearing faces between the fixed bearing member and the rotatable bearing member. Additional ducts 29 are provided the cup' therein directly above the groove 16 in the stationary member to relieve the cup of excessfoil.

- The upper end of theshaft 23 is connected to a suitable source of power such as a small electric motor 30 mounted on the panel 12. In this connection, it is an important feature of the invention that the motor be of comparatively low pow er sothat changes in the resistance offered by the bearing to the rotation of the shaft will 'produce'ccrresponding changes in the speed of rotation of the motor. In other words, the source of power should be small and substantially constant so that different qualities of lubricant between the bearings will effect a sensible difference in speed of the shaft.

For permitting visual observation of the speed of rotation of the shaft 23, various means may be employed; as for instance, in the form shown in Fig. 1', the shaft is painted spirally in two colors as indicated at 31 and 32, any two contrasting colors being preferably used.

The device operates in the following manner: The motor 30 is started and a few drops of lubricatm'g-oil placed inthe cup or rotating bearing 21. This lubricating oil flows through the ducts 29" to the bearing faces of the bearing members 21 and 14, lubricating such surfaces. Asssuming that the oil first used is a heavy oil, it will offer a high resistance to the rotation of the rotatable bearing 21,"and consequently turn slowly. 'Ifa lighter oil is then dropped into the cup, an appreciable faster rotation of the shaft 23 is clearly visible, due to the color striping above referred to. In fact, the different grades of oil now in common use for lubricating purposes, as for instance, S. A. E. 50, 40, 30, and 20, have such a different effect as lubricant on the bearing surfaces as to be evident by a clearly visible difference in speed of rotation of the shaft. The rotating bearing is free to slide vertically on the squared end of the shaft 23 so that the bearing faces of the two bearings may accommodate the oil used according to the thickness of the film of oil therebetween.

This device, in view of its visual demonstration above described, lends itself particularly as an educational device in apprising the motoring pub lie and dealers of the difference in different grades of lubricating oils, and affords demonstration of the necessity of using proper oil in the motor according to the character of motor and condition due to wear.

In the form shown in Fig. 5, instead of color striping the shaft 23 as done in the form shown in Figs. 1 and 3, a collar 35 is secured to the shaft onto which are pivotally mounted arms 36 having balls 37 on their lower ends. These arms and balls are constructed of sufficiently light material so that they do not perform the function of a governor but do have sufficient weight so that as the shaft speed increases the balls swing upwardly, the panel 12 being marked as indicated at i0 to denote the character of oil under demonstration.

It will be understood that various. forms of devices may be employed without departing from the spirit of my invention.

I claim as my nvention:

1. A display device for demonstrating lubricating oils comprising: a base member; a standard supported on the base member; a bearing fixed to the base member having a horizontally disposed bearing face, said bearing having ducts therein communicating with Wells formed in said base member; a motor supported on said standard; a shaft driven by said motor having its lower end seated in a recess in the fixed hearing member; a squared portion on said shaft; a rotatable bearing member slidable on the squared portion of said shaft and having a bearing face engaging the bearing face on said fixed bearing; a cup formed in said rotatable bearing member having ducts extending to its bearing face and spiral color stripings on said shaft.

2. A display device for demonstrating lubricating oils comprising: a base member; an upright panel supported on said base member; a bearing fixed to said base member having a horizontally disposed bearing face, saidbearing having ducts therein communicating 'with wells formed in said base member; a motor supported on said panel; a shaft driven by said motor having its lower end seated in a recess in the fixed bearing member; a squared portion on said shaft; a rotatable bearing member slidable on the squared portion of said shaft and having a bearing face engaging the bearing face on said fixed bearing; a cup formed in said rotatable bearing having ducts extending to its bearing face; and weighted arms pivoted to said shaft and adapted to be swung into various angular relations with said shaft under the centrifugal action thereof at various speeds of rotation.

3. A display device for demonstrating lubricating oils comprising: a supporting member; a fixed bearing member on said supporting member; a motor on said supporting member; a rotatable shaft driven by said motor, having its lower end seated in a recess in the fixed bearing member; a squared portion on said shaft; a rotatable hearing member slidably mounted on the squared portion of said .shaft and engaging the fixed bearing member; and means on said shaft for visibly indicating the speed thereof, said motor being of a power such that relatively slight changes in resistance offered by the rotatable bearing to the rotation of the shaft will produce corresponding visible changes in the speed of the motor and the shaft.

4. A display device for demonstrating lubricating oils comprising: a supporting member; a fixed bearing member on said supporting member; a motor on said supporting member; a rotatable shaft driven by said motor, having its lower end seated in a recess in the fixed hearing member; a squared portion on said shaft; a rotatable bearing member on the squared portion of said shaft engaging the fixed bearing member; and visible speed indicating means associated with said shaft, said rotatable bearing member being slidably mounted on the squared portion of said shaft and having a cup formed thereon With ducts leading from said cup to the bearing face of said rotatable bearing member, said motor being of a power such that relatively slight changes in resistance offered by the rotatable bearing to the rotation of the shaft will produce corresponding visible changes in the speed of the motor and the shaft.

5. A display device for demonstrating lubricating oils comprising: a supporting member consisting of a base member, a panel mounted on the base member, and a fixed bearing member on the base member having a horizontally disposed bearing face; a motor mounted on the panel; a vertically extended shaft on said motor; a rotatable bearing member slidably mounted on said shaft having a bearing face engaging the bearing face on said fixed bearing member; and'visible speed indicating means on said shaft, said motor being of a power such that relatively slight changes in resistance offered by the rotatable bearing to the rotation of the shaft will produce corresponding visible changes in the speed of the motor and the shaft.

6. A display device for demonstrating lubricating oils comprising: a fixed bearing member having a horizontally disposed bearing surface; a rotatable bearing member supported on a film of oil on the bearing surface of said fixed bearing member; display means connected to the rotatable bearing member to visibly denote the rotation of the rotatable bearing member; and a substantially constant source of power for rotating said rotatable bearing, said source of power being of a magnitude such that relatively slight changes in the resistance offered to said rotatable bearing by said oil film produce corresponding visible changes in the speed of rotation of said rotatable bearing.

GEORGE S. CAVANAUGH. 

